scholarly journals Emptying of Intracellular Calcium Pool and Oxidative Stress Imbalance Are Associated with the Glyphosate-Induced Proliferation in Human Skin Keratinocytes HaCaT Cells

2013 ◽  
Vol 2013 ◽  
pp. 1-12 ◽  
Author(s):  
Jasmine George ◽  
Yogeshwer Shukla
Keyword(s):  
Oxidative Stress ◽  
Mouse Skin ◽  
Sharp Decrease ◽  
Human Keratinocytes ◽  
Ros Generation ◽  
Hacat Cells ◽  
Skin Keratinocytes ◽  
Calgranulin B ◽  
Related Proteins ◽  
And Oxidative Stress

We demonstrated that glyphosate possesses tumor promoting potential in mouse skin carcinogenesis and SOD 1, calcyclin (S100A6), and calgranulin B (S100A9) have been associated with this potential, although the mechanism is unclear. We aimed to clarify whether imbalance in between levels and oxidative stress is associated with glyphosate-induced proliferation in human keratinocytes HaCaT cells. The levels, ROS generation, and expressions of G1/S cyclins, IP3R1, S100A6, S100A9, and SOD 1, and apoptosis-related proteins were investigated upon glyphosate exposure in HaCaT cells. Glyphosate (0.1 mM) significantly induced proliferation, decreases , and increases ROS generation in HaCaT cells, whereas antioxidant N-acetyl-L-cysteine (NAC) pretreatment reverts these effects which directly indicated that glyphosate induced cell proliferation by lowering levels via ROS generation. Glyphosate also enhanced the expression of G1/S cyclins associated with a sharp decrease in G0/G1 and a corresponding increase in S-phases. Additionally, glyphosate also triggers S100A6/S100A9 expression and decreases IP3R1 and SOD 1 expressions in HaCaT cells. Notably, Ca2+ suppression also prevented apoptotic related events including Bax/Bcl-2 ratio and caspases activation. This study highlights that glyphosate promotes proliferation in HaCaT cells probably by disrupting the balance in between levels and oxidative stress which in turn facilitated the downregulation of mitochondrial apoptotic signaling pathways.

scholarly journals Hydrogen Nano-Bubble Water Suppresses ROS Generation, Adipogenesis, and Interleukin-6 Secretion in Hydrogen-Peroxide- or PMA-Stimulated Adipocytes and Three-Dimensional Subcutaneous Adipose Equivalents

Cells ◽  
2021 ◽  
Vol 10 (3) ◽  
pp. 626
Author(s):  
Li Xiao ◽  
Nobuhiko Miwa
Keyword(s):  
Oxidative Stress ◽  
Hydrogen Peroxide ◽  
Interleukin 6 ◽  
Lipid Accumulation ◽  
Metabolic Disorders ◽  
Three Dimensional ◽  
Human Keratinocytes ◽  
Ros Generation ◽  
Obese People ◽  
Subcutaneous Adipose

Reactive oxygen species (ROS)-induced oxidative stress in adipose tissue is associated with inflammation and the development of obesity-related metabolic disorders. The aim of this study is to investigate the effects of hydrogen nano-bubble water (HW) on ROS generation, adipogenesis, and interleukin-6 (IL-6) secretion in hydrogen peroxide (H2O2) or phorbol 12-myristate 13-acetate (PMA)-stimulated OP9 adipocytes, and three-dimensional (3D) subcutaneous adipose equivalents. Nanoparticle tracking analysis showed that fresh HW contains 1.17 × 108/mL of nano-sized hydrogen bubbles. Even after 8 to 13 months of storage, approximately half of the bubbles still remained in the water. CellROX® staining showed that HW could diminish H2O2- or PMA-induced intracellular ROS generation in human keratinocytes HaCaT and OP9 cells. We discovered that PMA could markedly increase lipid accumulation to 180% and IL-6 secretion 2.7-fold in OP9 adipocytes. Similarly, H2O2 (5 µM) also significantly stimulated lipid accumulation in OP9 cells and the 3D adipose equivalents. HW treatment significantly repressed H2O2- or PMA-induced lipid accumulation and IL-6 secretion in OP9 adipocytes and the 3D adipose equivalents. In conclusion, HW showed a possibility of repressing oxidative stress, inflammatory response, and adipogenesis at cellular/tissue levels. It can be used for preventing the development of metabolic disorders amongst obese people.

scholarly journals A role for keratins in supporting mitochondrial organization and function in skin keratinocytes

2019 ◽  
Author(s):  
Kaylee Steen ◽  
Desu Chen ◽  
Fengrong Wang ◽  
Song Chen ◽  
Surinder Kumar ◽  
...  
Keyword(s):  
Oxidative Stress ◽  
Metabolic Regulation ◽  
Mouse Skin ◽  
Mitochondrial Morphology ◽  
Null Mouse ◽  
Embryonic Mouse ◽  
Atp Production ◽  
Skin Keratinocytes ◽  
Dynamics And Function ◽  
And Function

AbstractMitochondria fulfill essential roles in ATP production, metabolic regulation, calcium signaling, generation of reactive oxygen species (ROS) and additional determinants of cellular health. Recent studies have highlighted a role for mitochondria during cell differentiation, including in skin epidermis. The observation of oxidative stress in keratinocytes from Krt16 null mouse skin, a model for pachyonychia congenita (PC)-associated palmoplantar keratoderma, prompted us to examine the role of Keratin (K) 16 protein and its partner K6 in regulating the structure and function of mitochondria. Electron microscopy revealed major anomalies in mitochondrial ultrastructure in late stage, E18.5, Krt6a/Krt6b null embryonic mouse skin. Follow-up studies utilizing biochemical, metabolic, and live imaging readouts showed that, relative to controls, skin keratinocytes null for Krt6a/Krt6b or Krt16 exhibit elevated ROS, reduced mitochondrial respiration, intracellular distribution differences and altered movement of mitochondria within the cell. These findings highlight a novel role for K6 and K16 in regulating mitochondrial morphology, dynamics and function and shed new light on the causes of oxidative stress observed in PC and related keratin-based skin disorders.

scholarly journals Protective Effects of Aqueous Extract of Mentha suaveolens against Oxidative Stress-Induced Damages in Human Keratinocyte HaCaT Cells

2019 ◽  
Vol 2019 ◽  
pp. 1-8
Author(s):  
HansongI Lee ◽  
Miji Yeom ◽  
Seoungwoo Shin ◽  
Kyungeun Jeon ◽  
Deokhoon Park ◽  
...  
Keyword(s):  
Oxidative Stress ◽  
Phase Ii ◽  
Aqueous Extract ◽  
Biological Activities ◽  
Ros Generation ◽  
Related Factor ◽  
Hacat Cells ◽  
Human Keratinocyte ◽  
Wide Range ◽  
Phase Ii Enzyme

Mentha suaveolens is an aromatic herb that has a wide range of biological activities, including antimicrobial, antifungal, anti-inflammatory, and hepatoprotective properties. Although there are a few reports on the antioxidant property of M. suaveolens, its cytoprotective activity against oxidative stress has not been reported yet. The objective of this study was to determine the protective activity of M. suaveolens aqueous extract (MSAE) against hydrogen peroxide- (H2O2-) induced oxidative stress and apoptosis in human keratinocyte HaCaT cells. MSAE pretreatment decreased H2O2-induced cytotoxicity and suppressed H2O2-induced intracellular ROS generation. Furthermore, MSAE suppressed expression levels of H2O2-induced apoptotic genes such as cleaved caspase-3, caspase-9, and cleaved poly (ADP-ribose) polymerase (PARP). Pretreatment with MSAE induced expression of phase II enzyme such as HO-1 through translocation of NF-E2-related factor (Nrf2) upon H2O2 exposure. These results revealed that the cytoprotective effect of MSAE against oxidative stress-induced cell death was associated with activation of Nrf2-mediated phase II enzyme expression.

Ergosterol attenuates cigarette smoke extract-induced COPD by modulating inflammation, oxidative stress and apoptosis in vitro and in vivo

2019 ◽  
Vol 133 (13) ◽  
pp. 1523-1536 ◽  
Author(s):  
Xiao Sun ◽  
Xiuli Feng ◽  
Dandan Zheng ◽  
Ang Li ◽  
Chunyan Li ◽  
...  
Keyword(s):  
Oxidative Stress ◽  
Cigarette Smoke ◽  
Cigarette Smoke Extract ◽  
Cordyceps Sinensis ◽  
Chronic Obstructive ◽  
Therapeutic Effects ◽  
Related Proteins ◽  
And Oxidative Stress

Abstract Cigarette smoke (CS) is the major cause of chronic obstructive pulmonary disease (COPD). CS heightens inflammation, oxidative stress and apoptosis. Ergosterol is the main bioactive ingredient in Cordyceps sinensis (C. sinensis), a traditional medicinal herb for various diseases. The objective of this work was to investigate the effects of ergosterol on anti-inflammatory and antioxidative stress as well as anti-apoptosis in a cigarette smoke extract (CSE)-induced COPD model both in vitro and in vivo. Our results demonstrate that CSE induced inflammatory and oxidative stress and apoptosis with the involvement of the Bcl-2 family proteins via the nuclear factor kappa B (NF-κB)/p65 pathway in both 16HBE cells and Balb/c mice. CSE induced epithelial cell death and increased the expression of nitric oxide (NO), interleukin-6 (IL-6), tumor necrosis factor α (TNF-α), malondialdehyde (MAD) and the apoptosis-related proteins cleaved caspase 3/7/9 and cleaved-poly-(ADP)-ribose polymerase (PARP) both in vitro and in vivo, whereas decreased the levels of superoxide dismutase (SOD) and catalase (CAT). Treatment of 16HBE cells and Balb/c mice with ergosterol inhibited CSE-induced inflammatory and oxidative stress and apoptosis by inhibiting the activation of NF-κB/p65. Ergosterol suppressed apoptosis by inhibiting the expression of the apoptosis-related proteins both in vitro and in vivo. Moreover, the usage of QNZ (an inhibitor of NF-κB) also partly demonstrated that NF-κB/p65 pathway was involved in the ergosterol protective progress. These results show that ergosterol suppressed COPD inflammatory and oxidative stress and apoptosis through the NF-κB/p65 pathway, suggesting that ergosterol may be partially responsible for the therapeutic effects of cultured C. sinensis on COPD patients.

Chromium Ions Induced Cytotoxicity and Oxidative Stress in the MG63 Cell Lines

2007 ◽  
Vol 342-343 ◽  
pp. 609-612
Author(s):  
Jun Fu ◽  
Xing Liang ◽  
Shao An Wang ◽  
Li Tang ◽  
Ning Zhang
Keyword(s):  
Oxidative Stress ◽  
Critical Role ◽  
Mg63 Cell ◽  
Negative Influence ◽  
Ros Generation ◽  
Chromium Ions ◽  
Mg63 Cells ◽  
Intracellular Ros ◽  
Dose Dependent ◽  
And Oxidative Stress

The present study was designed to test the hypothesis that oxidative stress mediates chromium-induced cytotoxicity in MG63 cells and antioxidant N-acetyl-cysteine (NAC) can provide protection for osteoblasts against chromium-induced oxidative stress. We assessed the effects of chromium ions on cell viability, the level of intracellular reactive oxygen species (ROS) and intracellular ultrastructure in the presence or absence of NAC. A time- and concentrationdependent increased cytotoxicity, intracellular ROS generation was found and intracellular ultrastructure was damaged when cells were exposed to Cr+6. NAC afforded dose-dependent reduction to the cytotoxicity and level of cellular oxidative stress induced by Cr+6. Intracellular ultrastructural alterations were reduced by the NAC pretreatment, too. Cr+3 had no significantly negative influence in MG63 (5-20μM). Our results suggest that oxidative stress might be involved in Cr+6 induced cytotoxicity in osteoblasts. NAC can play a critical role against Cr+6- induced cytotoxicity. Cr+3 (5 -20μM) had no significant cytotoxicity in MG63 cells and cellular oxidative stress was not found, too.

scholarly journals The Effects of Oleuropein on Apoptotic Rate and Oxidative Stress Profiles during Tumour Promotion Stage in the Mouse Skin Carcinogenesis Model

2019 ◽  
Vol 48 (2) ◽  
pp. 347-352 ◽  
Author(s):  
Siti Fathiah Masre ◽  
Azim Izzuddeen ◽  
Dayang Noor Suzliana John ◽  
Zariyantey Abdul Hamid
Keyword(s):  
Oxidative Stress ◽  
Mouse Skin ◽  
Skin Carcinogenesis ◽  
Tumour Promotion ◽  
Stress Profiles ◽  
And Oxidative Stress

scholarly journals Curcumin Suppresses the Lipid Accumulation and Oxidative Stress Induced by Benzo[a]pyrene Toxicity in HepG2 Cells

Antioxidants ◽  
2021 ◽  
Vol 10 (8) ◽  
pp. 1314
Author(s):  
Seung-Cheol Lee ◽  
Seung-Cheol Jee ◽  
Min Kim ◽  
Soee Kim ◽  
Min Kyoung Shin ◽  
...  
Keyword(s):  
Oxidative Stress ◽  
Cytochrome P450 ◽  
Cell Viability ◽  
Lipid Accumulation ◽  
Hepg2 Cells ◽  
Nuclear Translocation ◽  
The Body ◽  
Ros Generation ◽  
Related Factor ◽  
And Oxidative Stress

Benzo[a]pyrene (B[a]P) is a potentially hepatotoxic group-1 carcinogen taken up by the body through ingestion of daily foods. B[a]P is widely known to cause DNA and protein damages, which are closely related to cell transformation. Accordingly, studies on natural bioactive compounds that attenuate such chemical-induced toxicities have significant impacts on public health. This study aimed to uncover the mechanism of curcumin, the major curcuminoid in turmeric (Curcuma longa), in modulating the lipid accumulation and oxidative stress mediated by B[a]P cytotoxicity in HepG2 cells. Curcumin treatment reduced the B[a]P-induced lipid accumulation and reactive oxygen spicies (ROS) upregulation and recovered the cell viability. Cytochrome P450 family 1 subfamily A polypeptide 1 (CYP1A1) and Cytochrome P450 subfamily B polypeptide 1 (CYP1B1) downregulation resulting from decreased aryl hydrocarbon receptor (AhR) translocation into nuclei attenuated the effects of B[a]P-induced lipid accumulation and repressed cell viability, respectively. Moreover, the curcumin-induced reduction in ROS generation decreased the nuclear translocation of Nuclear factor erythroid-2-related factor 2 (Nrf2) and the expression of phase-II detoxifying enzymes. These results indicate that curcumin suppresses B[a]P-induced lipid accumulation and ROS generation which can potentially induce nonalcoholic fatty liver disease (NAFLD) and can shed a light on the detoxifying effect of curcumin.

scholarly journals Correlation between intermediary metabolism, Hsp gene expression, and oxidative stress-related proteins in long-term thermal-stressed Mytilus galloprovincialis

2020 ◽  
Vol 319 (3) ◽  
pp. R264-R281
Author(s):  
Konstantinos Feidantsis ◽  
Ioannis A. Giantsis ◽  
Andreas Vratsistas ◽  
Stavroula Makri ◽  
Athanasia-Zoi Pappa ◽  
...  
Keyword(s):  
Oxidative Stress ◽  
Gene Expression ◽  
Lipid Peroxidation ◽  
Antioxidant Enzymes ◽  
Thermal Stress ◽  
Mytilus Galloprovincialis ◽  
Intermediary Metabolism ◽  
Related Proteins ◽  
And Oxidative Stress

Long-term exposure of Mytilus galloprovincialis to temperatures beyond 26°C triggers mussel mortality. The present study aimed to integratively illustrate the correlation between intermediary metabolism, hsp gene expression, and oxidative stress-related proteins in long-term thermally stressed Mytilus galloprovincialis and whether they are affected by thermal stress magnitude and duration. We accordingly evaluated the gene expression profiles, in the posterior adductor muscle (PAM) and the mantle, concerning heat shock protein 70 and 90 ( hsp70 and hsp90), and the antioxidant defense indicators Mn-SOD, Cu/Zn-SOD, catalase, glutathione S-transferase, and the metallothioneins mt-10 and mt-20. Moreover, we determined antioxidant enzyme activities, oxidative stress through lipid peroxidation, and activities of intermediary metabolism enzymes. The pattern of changes in relative mRNA expression levels indicate that mussels are able to sense thermal stress even when exposed to 22°C and before mussel mortality is initiated. Data indicate a close correlation between the magnitude and duration of thermal stress with lipid peroxidation levels and changes in the activity of antioxidant enzymes and the enzymes of intermediary metabolism. The gene expression and increase in the activities of antioxidant enzymes support a scenario, according to which exposure to 24°C might trigger reactive oxygen species (ROS) production, which is closely correlated with anaerobic metabolism under hypometabolic conditions. Increase and maintenance of oxidative stress in conjunction with energy balance disturbance seem to trigger mussel mortality after long-term exposure at temperatures beyond 26°C. Eventually, in the context of preparation for oxidative stress, certain hypotheses and models are suggested, integrating the several steps of cellular stress response.

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